Electrically-heated apparatus.



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A ELECTRICALLYHEATED APPARATUS.

. A APPLICATION FILED OCT. 23, I91?- I 1,146,328. Patented July 13, 1915. A 2 sams-suzsr 1.

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BY 'ATTORNEY v T;HO0CK. ELECTRICALLY HEATED APPARATUS- APPLICATION FILED OCT. 23. I912.

' Patented July 13, 1915.v

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UN TE .sTA'rEs PATENT OFFICE.

THEODORE HOOCK, 0F COLOGNE, BAYENTHAL, GERMANY, ASSIGNOR T0 WESTING- HOUSE ELECTRIC AND MANUFACTURING COMPANY, ACORPORATION OF PENNSYL- VANIA.

to'cooking devices such as ranges and stoves of the. so called heat storage type, in which electrical energy is supplied continu ously at a low rate and the heat thereby pro duced, is accumulated or stored and may be utilized for heating or cooking operations at anyrate' that may be required.

The object of my invention is to provide a device of the above indicated character, that shall be simple and durable in construction, 1

' is a view, partially in front elevation and partially in section, of a device constructed in accordance with my invention. Fig. 2 is a View, partially in side elevation and partially in section, of the device shown in Fig. 1. -'Fig. 3 is a view, in side elevation, of the frame structure upon which the heating device is constructed. Fig. at is a View, in side elevation, of a modified form of my invention. Fig. 5 is a plan view, partially in section, taken alongthe lines VV of Fig.- 4, and Fig. 6 is an enlarged view, partially in side elevation and partially in section, of a portion of the device shown in Fig. 1.

' Referring to'Figs. 1, :2, 3'and 6, the apparatus shown comprises a frame structure 1, a heat-storage body 2, an electric'heater 3, heat-insulating walls A, removable pads 5 and 6, a thermally-controlled protective device 7, a shelf 8, supporting brackets 9, 10 and 11, a movable bottom member 12, a movable oven 13, and a power-actuated linka e mechanism 14. The frame structure 1 o'- the range is preferably constructed of a pliirality of angleirons 17 whic'hfmay be assembled in substantially the manner shown in'Fig. 3, and be adaptedtosupport ffthe heat-storage body 2 in a sui b ELECTRICALLY-HEATED APPARATUS.

Specification of Letters Patent. Patented July 13, 1915 Application filed October 23, 1912. Serial N 0. 727,293. A

ner. The storage body 2 comprises a main body portion 18, having integral upwardly pro ecting members 1.), the upper surfaces 20 of whichare flush with theangle irons or cross pieces 17. The storage body 2 may conveniently be made of castiron or other material suitable for storing up and accmnulating heat that maybe imparted thereto at a slow rate, and said body :5 is provided with the electric heater 3 which is secured to the bottom thereof. Since the heater unit 3 forms no part of my present invention, except as it performs a necessary function in the o eration-of the device, it

-may be of any suitable construction. A terminal box 23 is provided, and leads 22.1 from the heater unit 3 terminate therein for the purpose of connection with an external source of energy. The walls -.l. of suitable heat-insulating material, are disposed between the heat-storage body 2 and the frame structure 1 and serve to prevent the loss of heat by radiation. Disposed upon the angle irons 17 of the frame structure 1, are the removable pads 5 of heat-insulating material and said pads are thus adapted to cover the upper surfaces 20 of the projecting members 19. which 1 shall hereinafter term hotplates. The pads' 5 are slidably disposed with relation to the angle irons 17 of the supporting structure 1 in order that they may be withdrawn, by means of handles 21', to expose the upper surfaces 20 of the hot plates 19 for cooking purposes. Side brackets 27 are provided to support the pads 5 when they occupy their outer positions, as shown in F ig. 1. Under normal conditions, when the range is not being used for cooking purposes, the pads 5 cover the hot-plates 19 and prevent the radiation and'loss of heat from the storage body 2. Obviously, the pads 5 may be withdrawn to expose one or more hot-plates 19, asdesired. and, when withdrawn, the upper surface of the range is smooth and unbroken and is free from any depressions or holes in which dirt and food may collect. Thus the cooking surface may "-vbe readily understood. Brackets 27 are also provided to support the pad 6 in its 'outer position. Furthermore, a door 28 is provided in the front wall of the range to covertlie opening referred to, when the removable pad 6 is withdrawn. By reason of this construction, a portion of the bottom of the heat storage' body 2 is exposed and v may be utilized to supply heat to meats or other receptacle (not shown) may be disother in; .eri als for broiling or similar pur poses, 1t being understood that a pan or posed in the opening beneath the material to be cooked, for the purpose of collecting the other, said openings being provided with sc'reens Hamper-34 that is pivotally mounted upon 'a' pin 35,;and, in its closed position, rests The device '7 comprises a I against flanges 36. A pin 37 pro eets from the damper 34 and cooperates with the bifureat'ed end 38 of-a rod 39 whichi's surrounded by a spring 40, the respective ends of which are associated with the rod 39 and the damper The other end 41 of the rod 39 is secured to the free end 42 of a bi-metal thermostat 43 which is associated with the heat-storage body 2 and is ofwell known construction.

43 tends to assume its original position, whereby. the damper 34 is again closed by reason of its connection with the spring 40.

set forth. The shelf 8 is provided with an opening 40 which is covered by the movable bottom member 12 that-is pivotally mounted upon a rod 41 and is normally maintained in its closed position as shown in Figs. 1.

and 2, by means of a spring 42 that surrounds the rod 41. The movable bottom 12 is also provided with heat-insulating material and, when the Fear pads 5 are withdrawn, said member 12 may beswung down:

wardly into the position shown in dotted lines in Fig. 2, thereby providing a confined heat-insulated passage which communicates between the exposed rear hot-plates 19 of the heat-storage body 2 an d'the oven 13 which normally rests upon the shelf 8.. A

spring-actuated button 44 is provided in the side bracket 9to cooperate with a suitable The structural details of the protective 'de- 1 ated with said oven in such manner'as to vice 7 .just set forth, are not material to my present invention, since any other suitable devieefor thermally controlling the operation of the damper 34 may be employed.

Assuming the various parts of the device '7 to occupy the positions shown, and that the ..*'temperature of the heat-storage body 2 is I sageway' 30 is allowed to escape, bymeans' raised above a predetermined value for which the thermostat 43 is adapted, the operation of the device is as follows: By reason of thepeouliar construction of the thermorecess 45 in the bottom member 12, wherebysaid member may be held in its lowered position against the action of the spring 42.

A handle 46 is rigidly connected to the rod 41 for the purpose of turning the movable" bottom member 12 to'its lower position.

The oven 13 is open at the bottom and normally rests upon the shelf 8 directly over the opening 40 therein, and the power,-ac-

,tuated linkage mechanisms 14 are 8850(51".

tend to raise the same to its upper position,

as shown in dot and dash lines in Fig. 2.

currently. Each of' the pantograph link ages 14 comprises a plurality of sets of arms 48 and 49 which are pivotally connected.

. The upper ends of the arms 48 are vpivotally stat 43, the free end 41 thereof is moved outwardly when the temperature exceeds the predetermined value, and, in so doing, the damper 84 is opened through the agency of the rod 39 andthe pin 37, as will be readily understood. Thus, the heat-which has ac-' cumulated in the'upper portion of the pasof the circulation of air which isestablished through the passage '30 and in proximity to sive heat thereof is carried away and the temperature is accordingly reduced. As the temperature of the heat-storage body 2 is lowered, the free end 410i the thermostat associated with the oven'13, by means of pins 51 while the lower ends of the arms49 are respectively fixed to shafts 52 uponwhieh segments 53 are also rigidly mounted. A heavy coil spring 54 is disposed between the segments 53 and the respective ends thereof are secured thereto. The contour of the segments 53 is so-designed that the turning moment about the shafts 52, due to .the spring 54, shall alwaysbe of sufiicient value to. raise the oven 13 toits upper poj sition, regardless oftheqintermediate position that the oven may occupy, Although I find the pantograph mechanism, hereinbefore set forth, to be-particularly"adaptable tion upon theish elf 8. I,.therefore, provide a'locklng means 55 that comprises members 56 which project downwardly from the bottom edge of the oven 13 and are adapted to be engaged by suitable detents or latches .37 that are associated with a rod 58 that is. 15 located in the middle of the shelf 8 and projects therethrough. '[he'rod 58 is provided with a handle 59 and is normally adapted to eli'eet the engagement of the detents 57 witlnthe members 56 by-reason of a spring X rack (32 or other device for supporting the materials to be cooked in the oven 13 is provided and is adapted to rest upon the shelf 8 when the oven 13 occupies its lower position.

Assuming the various parts of the device to occupy the positions shown in Figs. 1 and :2 and the bottom member 1; to be in its lower position as shown in dotted lines in Fig. .2, it is evident that heat is supplied from the exposed rear hot plates 1!) of the heat-storage body :2 through the confined passage. lu-reinla'i'ore described. and opening io to the oven 13. When sutlicieut heat has thus been supplied to the oven 13, the

bottom member 12 may be raisedto its upper position, theJeby covering the bottom opening 40 in the shelf 8 after which the rear pads 5 may be pushed into cover the hot-plates 19. Thus, the heat of the 0 lu-at-storage body 2 is conserved and the oven 13 may be employed as a so-called tireless cookerf'in accordance with wellknown principles. In this way, the cooking operation continues in the oven 13 without further utilization of heat, while the heat continuously delivered to tlie.heat-stor-- age body '2 accumulates. therein, for future use. if, at any time, it' is found that the [cooking operation is proceeding too slowly,

additional heat may be supplied to the oven 13 by withdrawing the rear pads 5 and. low- "eriug the bottom 12 as hereinbefore set forth. Obviously, if rapid cooklng be desiredl'he'at may be supplied to the oven continuously in the usual manner. \Vhen the cooking operation is completed, the oven 13 may be raised into its upper position shown in Fig. 2 merely by releasing the locking means by means of the handle 59. Upon the release of the latches 57,'the pantograph linkage mechanisms 14 raise the oven as hereinbefore set forth, leaving the rack 62 and cooked materials thereon, readily accessible. In "order to lower the oven 13 to 86 its normal position, it is only necessary to been removed. the oven 13 may employ a handle 63 and .to pull the oven down inopposition to the action of the operating mechanisms 14:.

Reference may now be had to Figs. 4 and 5 which illustratea range of similar type to that already described and having an oven 13 provided with operating mechanisms 14 and other devices like those hereinbefore set forth. The oven 13 is adapted to normally rest directlyupon the cooking surface 20 1 when the rear pads o are removed. In place of the shelf 8 and the removable bottom member 12, this modified form of my invention is provided with a bottom member '12 that is pivotally mounted at the rear and lower edge of the oven 13 in such manner that, when the oven is in its lowered position, the bottom member 1'2 hangs downwardly at the back of the main body of the range, as shown in Fig. l. Furthermore, in order that the rack (3:2 may be rigidly associated with the oven 13, I provide a lock-' ing means (36 that is somewhat similar in construction to the locking means 55 for restraining the oven 13 in its lowered position. This locking means (36 is located near the top of the oven 13 and embodies rods 58 which are connected and provided with a handle 59. 'Latches'or detents57 are associated withsaid rods 58 for the purpose ot'engaging members 56 that are associated with the rack 62. A latch 68 is also provided to restrain the bottom member 12* in its upper or closed position. r 1

Assuming the apparatus to occupy the po-: sitions shown in Fig. 4, when sufficient heat has been imparted to the oven 13, the lockirg means is released, thereby allowing the operating mechanisms ,14: to raise the oven 13 and associated rack 62 to itsnpper position, as shown in dotted lines. The bottom member 12 is then swung into its upper position and retained therein by means of the latch 68, thereby completely closing the oven'13 which may be employed as a fireless cooker in the same manner as herein- 7 upon the rack 62, which thus remains in its lowered position. Vihen the materials have be lowered and the rack 62 locked to the oven by means of the locking device 66, after which the oven 13 and the rack 62 may be again raised to their upper positions where they interfere, in no way, with furthenpperations upon the range. I

Obviously, various modifications may I, be effected in the structural details and in the arrangement and location of parts without departing from the spirit and scope of my invention, and I intend that such modifications shall be covered in the appended -cla1ms.""-" v I claim as myinven'tion:

1. A heating device compri'singa supporting structure, heat-insulating walls therefor, a heat-storage body disposed within said walls and having members integral with said body projecting upwardly through the upper Wall, electrical means for delivering heat to said body, and removable members or pads of heat-insulating material covering the upper faces of said projecting members.

2. A heating device comprising a supporting structure, heat-insulating walls therefor, a heat-storage body disposed therein, means for electrically heating said body, one of said walls having a heating chamber communicating with the bottom of said body, a heatinsulatin coverhor door'for said chamber and a coo 'ng space communicating with the top of said body. a 3. A heating device comprising a support ing structure, heat-insulating Wall's therefor, a heat-storage body disposed therein, means forelectrically heating said body, a removable padof heat-insulating material disposed immediately below said body, and -a door for covering the opening provided when said pad is partially withdrawn.

4. In a heating device, the combination with a supporting structure, heat-insulating walls therefor, a heat-storage body disposed within said walls and means for electrically heating said body, of automatically operating means 'for efiecting a circulation of ody under predetermined conditions.

i 5. In a heating device, the combination with a supporting structure, heat-insulating walls therefor, a heat-storage body disposed therein and electrical means for heating said body, one of said walls having a passage disposed in proximity to a portion of said body and having a plurality of openings, of means normally tending to close said passage, and

automatic means for opening said closing means under predetermined conditions.

6. In a heating-device, the combination with a supporting structure, heat-insulating walls therefor, a heat-storage body disposed. therein and means for electrically heating said body, one of said walls having a passage disposed in proximity to a portion of said body and having a plurality of exterior openings, of a damper in said passage, and thermal means for actuating said damper undeil predetermined heat conditions l v'm .7. a cooking device, the combination with .et range embodying a heat-storag"body, an electric heater therefor and heat-insulating walls and removable pads enveloping said -body,--of an oven having a bottom opening cooling air in proximity to a portion of said adaptedto communicate with said heatstorage body when said pads are removed, and means for elevating said even above said rings. 1

y ,8. Inca cooking device, the combination i g with a range embodyingaheat-storage body,

meansfor heating said body, and heat-insulating Walls andfi'emovable pads for preventing the radiation of heat therefrom, of an oven .having a bottom opening adapted to connnunicate with said heat-storage body when said pads are removed and a power actuated linkage mechanism for raising said oven above said range. i 9. In a cookingdevice, the combination with a range embodying means for electrically heatingthe same, of an oven supported above said range, and means for providing a confined passage between said range and I to be swung downwardly to form a confined passage between said storage body and said oven when said pads are removed.

12. In a cooking device, the combination with a range embodying a heat-storage body, an electric heater therefor, and heat-insulating walls and removable pads enveloping said body, of an oven'disposed above said range and having a bottom opening, and means for providing a confined passage between said storage body and said oven when said pads are removed.

13. In a cooking device, the'combination with a range embodying a storage body, an electric heater therefor, and heat-insulating walls and removable pads for envelopingthe same, of an oven disposed above said range and having a removable bottom, and

means including said removable bottom and pads for providing a confined passage between said storage body and said oven.

14.;In a cooking device, the combination with a supporting structure, a heat-storage body disposed therein, electrical means for heating said body, removable heat-insulating pads for covering a portion of the upper surface of said body, and heat-insulating walls enveloping the remainder of said body, of a supporting bracket disposed above said supporting structure and having a bottom opening, a heat-insulating oven having a bottom opening disposed upon said v supporting bracket and over sai bracket openmg; and a pivotally mounted cover of heatinsuiatingmaterial for said. bracket open ng 5 and adapted to he swung downwardly to provide a "confined passage from the heatsaid pads are removed,

15,111 a cooking device, the combination 0 with arange and'means for electrieall heating the same, ofan oven having av ottom opening and adapted to rest, upon said range, a rack disposed within said oven,

- ing the same, of an oven having a removable 20 bottom and adapted to rest upon said range,

' mechanical means normally tending to raise said even above said ,rangaand means for latching said oven in its lowered pos1t1on.

storage bodyito said oven when a portion of 17. In a heating device, the combination with a supporting structure, heat-insulating 25 walls therefor, a heat-storage b'ody di osed therein and means for heatini said bo y, of a heat-insulating pad slida and laterally toexpose a heating surface of said body.

18. In a heating device, the combination with a heat-storage body, and an electric heater and heat-insulating walls therefor, of a heat-insulating ad normally coverin a heating surface 0 said body and slidaile' 85 outwardly and laterally to expose said heat ing surface, andmeans'for supporting said pad in its outer position. I 7

In testimony. whereof, I hgye hereunto subscribed my name this 5th THEODORE HOOCK.

Witnessesz I LOUIS VANnoRY, 'Bnssrn F. DU'NLAP.

1e outwardly 

